Problem

As HVAC energy and industry

standards become more stringent, the

accuracy of measuring low air flow

(below 50cfm) air-exchange will

become increasing important to

reduce the carbon footprint of building

energy use. 

Product Roadmap

Design Solution

Simple, reuseable, low cost, low flow measurement device

Based on tested volume capture method

Easy to use (as simple as roll bag and press against vent)

Extendsover 2 feet beyond user's reach for ceiling vents

Improved accuracy compared to current;y availble

equipment on the market

With automatic flow calculation to mitigate human error

Data/Analysis

Current Design

Tech Specs

Acknowledgements

Sponsor: Shawn Oram Advisor: Teddy Johnson

Special Thanks to Troy Dunmire

Due to Covid-19, we were unable to do any field

testing nor could we compare to measurements

using equipment traditionally used by industry

professionals

The test rig was calibrated by monitoring electrical

properties of the fan with a multimeter and

developing fan curves using the fan affinity laws.

Calibrated test rig

Infrared Sensor

Limit Switch

Arduino Micro

w/LCD screen